Document Details

Document Type : Article In Journal 
Document Title :
Dual-wavelength β-correction spectrophotometric determination of trace concentrations of cyanide ions based on the nucleophilic addition of cyanide to imine group of the new reagent 4-hydroxy-3-(2-oxoindolin-3-ylideneamino)-2-thioxo-2H-1,3-thiazin-6(3H)-o
Dual-wavelength β-correction spectrophotometric determination of trace concentrations of cyanide ions based on the nucleophilic addition of cyanide to imine group of the new reagent 4-hydroxy-3-(2-oxoindolin-3-ylideneamino)-2-thioxo-2H-1,3-thiazin-6(3H)-o
 
Subject : Chemistry 
Document Language : English 
Abstract : A simple, fast, low cost and sensitive direct β-correction spectrophotometric assay of cyanide ions based on its reaction with the reagent 4-hydroxy-3-(2-oxoindolin-3-ylideneamino)-2-thioxo-2H-1,3-thiazin-6(3H)-one, abbreviated as HOTT in aqueous media of pH 7-10 is described. The electronic spectrum of the produced brown-red colored species showed well defined and sharp peak at λmax = 466 nm. The effective molar absorptivity for the produced cyano compound was 2.5 × 104 L mol-1 cm-1. Beer's law and Ringbom's plots were obeyed in the concentration range 0.05-2.0 and 0.30-1.5 μg mL-1 cyanide ions, respectively. The proposed method offers 16.0 and 50.3 μg L-1 lower limits of detection (LOD) and quantification (LOQ) of the cyanide ion, respectively. The analytical utility of the method for the analysis of cyanide ions in tap and drinking water samples was demonstrated and the results were compared successfully with the conventional cyanide ion selective electrode. The short time response and the detection by the naked eye make the method available for the detection and quantitative determination of cyanide in a variety of samples e.g. fresh and drinking water. Moreover, the structure of the produced colored species was determined with the aid of spectroscopic measurements (UV-Vis, IR, 1H and 13C NMR) and elemental analysis. © 2009 Elsevier B.V. All rights reserved. 
ISSN : 00032670 
Journal Name : Analytica Chimica Acta 
Volume : 657 
Issue Number : 1 
Publishing Year : 2010 AH
2010 AD 
Article Type : Article 
Added Date : Tuesday, January 5, 2010 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
A HamzaHamza, A ResearcherDoctorate 
عبدالعزيز صالح باشماخBashammakh, A SResearcherDoctorateabashammakh@kau.edu.sa
عبدالعزيز إبراهيم السباعيAl-Sibaai, A AResearcherDoctorateaalsibaai@yahoo.co.uk
M H Al-SaidiAl-Saidi, M HResearcherDoctorate 
محمد سرور الشهاويEl-Shahawi, M SResearcherDoctorateMALSAEED@kau.edu.sa

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